Winter project

[Farmerj]

I mean I dunno about you but my 280ai eats any 280’s lunch just as it sits at SAAMI length. If I seated the bullets out like you then it would be even more fun. That’s in no way bashing the 280 Rem because I’m rather fond of it

What’s more, I know plenty of guys who get massive gains from AI’ing 25-06s and 6.5-06s and 7-08s and a plethora of others.

I realize this is derailing the OP’s post, though. Have a good day

I’m kinda looking to use Roy weatherby’s practice to use monster jumps to keep pressures down. And looking at seeing what it will do for the .280 Remington.

I’ve already stepped away from the norm of using slower powders and moved up the chart to a faster burn rate powder.

 

[Farmerj]

the factory federal Corelokt 140 gr I was using is around 2850. I'd be happy to get hand loads to 2950-3000.

 

[RaiderRich]

Not on the list but in the same thought as @VikingsGuy go cutting/bleeding edge on the long action with a 7mm PRC with a threaded 18" to 20" barrel and put a suppressor on it.

 

[buffybr]

There are SO many options out there for chamberings. I fell in love with the .260 Remington and the 6.5X55 Swede early in my gun days. I wished I would have gotten some of those cheap surplus Swedes when they were available now.

Always wanted a .260 Remington when it was released in 1997. And now I have it. Didn’t seem to matter to people there’s other things at play and it’s a turn off to be constantly told how it’s a junk cartridge and you need an ackley or creedmoor.

Army co-worker was the same way with me on my .280 Remington. With ballistics so similar to the 7mm Winchester Magnum, but in a .30-06 case, I didn’t want a belted magnum. But man talk about getting the lectures and not having anyone listen to my reasons for it.

So I got turned off on the ackley, creedmoor, and belted magnum crazes and went my own direction.

And glad I did.

What are the ballistics on that 7mm Winchester Magnum?

 

[Farmerj]

What are the ballistics on that 7mm Winchester Magnum?

Guess which one is the win mag…

Same bullet…

Similar velocity…


Why should I load a belted magnum and beat myself up? Why should I burn 10% more powder to get the same velocity?




Same bullets for the 280 Remington or the 7mm Remington Magnum.

 

[Farmerj]

Are you loading anything for 280?

 

[Farmerj]

What are the ballistics on that 7mm Winchester Magnum?

This time with the 162 gr ELD -X

So close…. IF one were to drive them that fast.

 

[buffybr]

So what you're calling your 7mm Winchester Magnum is actually your .280 Remington?

I just checked the load data in my Hornady 10th Edition Handbook for loads for .280 and .280 Ackley with 139 gr bullets. Basically, 1 more grain of powder in the .280 AI adds 100 fps over that same powder in the standard .280 Rem. That same book lists loads for the 7 RM requiring 2-3 grains more powder for the same velocities of the .280 AI.

For over 20 years my favorite elk rifle was my .30 Gibbs which added 2-300 fps over a standard .30-06 with 180 gr Partitions, and was on par with .300 H&H and .300 Win mag loads. It wasn't a plinking rifle, but I never noticed excessive recoil from it.

I now have rifles chambered in .270 Win and 7mm Rem mag. My favorite rifle is my .300 Weatherby with my 7 RM second, even though it has brought more animals to my taxidermist than any of my other rifles.

If I didn't have the .270 and 7 RM, I would probably get a .280 Ackley. I like the minimum case body taper and the sharper shoulder of the Ackley Improved cases. To each his own...

 

[Farmerj]

Those screen shots are right out of the Hornady App.

One is for .280 Remington and the other is for 7mm Remington Magnum.

What I was able to get for a chrono speed off this ammo showed it at 2840 for both rifles off an 18” barrel. Right where Remington says their factory test says it should be.



Due to deer season, I haven’t been able to work up the hand loads I wanted for them because of the issues with that stupid vortex scope issues.

See what happens in December when I get home.

I have to decide if I want a 6.5 or 7mm throat reamer for my chamber I want to start with. I have a leaning towards the 6.5 mm. Using some of the tricks of Roy weatherby, I don’t see it being an issue getting 2850-2900 fps off the 162 gr ELD-X.

Premium Uni-Throater Kit - Pacific Tool and Gauge

Premium Uni-Throater Kit at Pacific Tool and Gauge

pacifictoolandgauge.com

 

[Farmerj]

.280 Remington vs Ackley Improved…

You’re right to each their own.

I can get similar performance with less powder…

Again… the Hornady app providing that information.



The 7RM has larger bullets listed that aren’t in a load book for the .280Rem. Like 180 -190 gr. If I’m going that big, I’d likely step up to the .30-06 and work there or even into a 220 gr area.

 

[Farmerj]

I am going to make a statement and it’s likely to create a storm of controversy…

If you’re going to come at me and say, “but this one gives me 50 fps more velocity with 3-5 more grains…” I’m going to throw it right back at you and say show the statistical differences. And that’s going to demand, based on laws of probability, being way more rounds that a single sitting of 3 or 5 round groups.

If you’re talking 2600 vs 3200 fps, now we got something real to explore.

50-75 fps can just be the difference of shooting January vs July. Colorado slopes vs lowland Texas.

I’m already doing things like using H4895 in the .260 Remington where people are insisting it won’t work and I have to use 4350 or 4831…

Problem is…

It does work.

 

[Hammsolo]

I second the 7 prc. It looks like it will stick. It’s stats are impressive, and with Hornady pushing hard it will probably end up in all sorts of factory rifles and loads.

7 prc vs. 7 rm

 

[nhenry]

.280 Remington vs Ackley Improved…

You’re right to each their own.

I can get similar performance with less powder…

Again… the Hornady app providing that information.
View attachment 249738View attachment 249739View attachment 249740


The 7RM has larger bullets listed that aren’t in a load book for the .280Rem. Like 180 -190 gr. If I’m going that big, I’d likely step up to the .30-06 and work there or even into a 220 gr area.

View attachment 249741

Use Nosler’s data and we’ll have a hoedown. Also I think your gun may have an overpressure problem

 

[old roper 42]

.280 Remington vs Ackley Improved…

You’re right to each their own.

I can get similar performance with less powder…

Again… the Hornady app providing that information.
View attachment 249738View attachment 249739View attachment 249740


The 7RM has larger bullets listed that aren’t in a load book for the .280Rem. Like 180 -190 gr. If I’m going that big, I’d likely step up to the .30-06 and work there or even into a 220 gr area.

View attachment 249741

The first data you posted is from Hornady manual #11 for 280AI/162gr, 2nd data is from Hornady manual #11 for 280/139gr.

 

[Farmerj]

The first data you posted is from Hornady manual #11 for 280AI/162gr, 2nd data is from Hornady manual #11 for 280/139gr.

Didn’t hide that either.

The first is for 139 gr for both 7mm Remington Magnum and .280 Remington.

The second is the same for 162 gr.

It’s why the tables are there with the same screen shots of the bullets.

When I compare them, you can get both to shoot very close (within 50-100 fps) of each other.

Gets into a position, it’s insignificant.

 

[Addicting]

Didn’t hide that either.

The first is for 139 gr for both 7mm Remington Magnum and .280 Remington.

The second is the same for 162 gr.

It’s why the tables are there with the same screen shots of the bullets.

When I compare them, you can get both to shoot very close (within 50-100 fps) of each other.

Gets into a position, it’s insignificant.

I would say depending on the rifle. You have more of a propensity to hit higher velocity with more case capacity. Say you are at max capacity but have a slow barrel on a 280. The only way your getting it up to where it should be is with a primer/powder change or just more powder.

You can’t create more capacity in a case, you need the capacity to begin with.

 

[Farmerj]

So for an extra 2-3 gr of powder, some instances as much as 7, the 7remmag isn’t giving you any more speed. But it’s giving you a lot more recoil.

If you load according to the load books.

It’s why I posted the screen shots.

The 7mm rem mag is shooting the same speeds with more powder.

 

[buffybr]

Those screen shots are right out of the Hornady App.

One is for .280 Remington and the other is for 7mm Remington Magnum.

What I was able to get for a chrono speed off this ammo showed it at 2840 for both rifles off an 18” barrel. Right where Remington says their factory test says it should be.

Personally, I wouldn't want either a .280 Rem or a 7mm RM with an 18" barrel. I think that you wold loose 2-300 fps in velocity, and the muzzle blast would be worse than it is from my .375 RUM with it's 26" barrel and muzzle brake.

 

[mtmuley]

The 7mm rem mag is shooting the same speeds with more powder.

Some people don't care. mtmuley

 

[nhenry]

Some people don't care. mtmuley

Well said